SampleType

preemptive_threads::observability::profiler

Enum SampleType

pub enum SampleType {
    CpuSample {
        instruction_pointer: u64,
        cpu_time_delta: u64,
    },
    MemoryAllocation {
        size: u64,
        allocation_type: AllocationType,
    },
    MemoryDeallocation {
        size: u64,
    },
    ContextSwitch {
        from_thread: ThreadId,
        to_thread: ThreadId,
        switch_latency_ns: u64,
        switch_reason: ContextSwitchReason,
    },
    SchedulerDecision {
        ready_queue_length: usize,
        selected_priority: u8,
        decision_latency_ns: u64,
    },
    LockContention {
        lock_address: u64,
        wait_time_ns: u64,
        waiter_count: u32,
    },
}

Expand description

Types of profiling samples.

Variants§

CpuSample

CPU execution sample

Fields

§instruction_pointer: u64

Instruction pointer

§cpu_time_delta: u64

CPU time since last sample (nanoseconds)

MemoryAllocation

Memory allocation sample

Fields

§size: u64

Size of allocation

§allocation_type: AllocationType

Allocation type

MemoryDeallocation

Memory deallocation sample

Fields

§size: u64

Size of deallocation

ContextSwitch

Context switch sample

Fields

§from_thread: ThreadId

Previous thread ID

§to_thread: ThreadId

Next thread ID

§switch_latency_ns: u64

Switch latency (nanoseconds)

§switch_reason: ContextSwitchReason

Switch reason

SchedulerDecision

Scheduler decision sample

Fields

§ready_queue_length: usize

Number of threads in ready queue

§selected_priority: u8

Selected thread priority

§decision_latency_ns: u64

Decision latency (nanoseconds)

LockContention

Lock contention sample

Fields

§lock_address: u64

Lock address

§wait_time_ns: u64

Time spent waiting (nanoseconds)

§waiter_count: u32

Number of waiters

Trait Implementations§

impl Clone for SampleType

fn clone(&self) -> SampleType

Returns a duplicate of the value. Read more

1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

impl Debug for SampleType

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

Auto Trait Implementations§

impl Freeze for SampleType

impl RefUnwindSafe for SampleType

impl Send for SampleType

impl Sync for SampleType

impl Unpin for SampleType

impl UnwindSafe for SampleType

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> CloneToUninit for T
where T: Clone,

unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> ToOwned for T
where T: Clone,

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.